Why are streak plates used to test minerals? A. They show you the silicon content of the mineral.
B. They show you the color of the impurities in the mineral.
C. They show you the true color of the mineral.

They said i have got a sign of tuberculosis what should i do

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

Which of the following typically characterizes a tropical rainforests